AR-18 was the designation for the full auto rifle (AR-180 was the semi auto rifle). For an AR-18, $10,000 - $12,000 for a properly licenced and NFA registered rifle; about ten years in federal prison for an illegal full auto. For the AR-180, figure something in the $1500 - $1800 price range for an Armalite; up to $2500 for the imported, pre-922r rifles manufactured by Sterling and Howa. For the current production AR-180B, with the polymer receiver, $800 - $900 NIB.
Piggot, AR, is approximately 18 miles southwest of Hoxie, AR. The drive between the two towns typically takes about 25-30 minutes, depending on traffic and road conditions.
Yes, argon (Ar) and sodium (Na) are isoelectronic. Isoelectronic species have the same number of electrons. Argon has 18 electrons, while neutral sodium has 11 electrons, but when sodium loses one electron to form the Na⁺ ion, it also has 10 electrons, making it isoelectronic with neon (Ne), not argon. Therefore, Ar and Na are not isoelectronic.
what is ar caller
'Ar' represents the chemical symbol for argon, a noble gas found in group 18 of the periodic table. It is colorless, odorless, and inert, making it useful in various applications, including lighting and welding. Argon is the third most abundant gas in the Earth's atmosphere, comprising about 0.93% of it.
Argon has three naturally occurring isotopes: ^{36}{18}Ar, ^{38}{18}Ar, and ^{40}_{18}Ar.
"AR" was a shortened form of "Armalite" - the company which designed the AR-15, AR-18, and other firearms.
"Armalite rifle" is a term used to describe two rifles developed for the Armalite Division of the Fairchild Aircraft Company - the AR-15, and the AR-18. The AR-15 was developed from the earlier AR-10. The AR-15 and AR-18 were both designed by Eugene Stoner.
That depends on the isotope, as Argon has three different stable isotopes and many different radioactive isotopes.
Argon Ar Atomic No 18 Atomic weight 39.948
When they are 18.
An atom of (^{40}_{18}\text{Ar}) (argon) has 18 electrons. This is because the number of electrons in a neutral atom is equal to the number of protons, and for argon, the atomic number is 18. Thus, an atom of argon has 18 protons and 18 electrons.
Argon, Ar, has the atomic number of 18 on the Periodic Table of Elements.
Atomic number 18: argon (Ar)
18 protons and 18 neutrons
Argon (Ar)
AR-18 was the designation for the full auto rifle (AR-180 was the semi auto rifle). For an AR-18, $10,000 - $12,000 for a properly licenced and NFA registered rifle; about ten years in federal prison for an illegal full auto. For the AR-180, figure something in the $1500 - $1800 price range for an Armalite; up to $2500 for the imported, pre-922r rifles manufactured by Sterling and Howa. For the current production AR-180B, with the polymer receiver, $800 - $900 NIB.